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java.lang.Objectorg.apache.hadoop.hbase.io.hfile.AbstractHFileReader.Scanner
org.apache.hadoop.hbase.io.hfile.HFileReaderV2.AbstractScannerV2
org.apache.hadoop.hbase.io.hfile.HFileReaderV2.EncodedScannerV2
protected static class HFileReaderV2.EncodedScannerV2
ScannerV2 that operates on encoded data blocks.
Field Summary |
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Fields inherited from class org.apache.hadoop.hbase.io.hfile.HFileReaderV2.AbstractScannerV2 |
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block |
Fields inherited from class org.apache.hadoop.hbase.io.hfile.AbstractHFileReader.Scanner |
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blockBuffer, blockFetches, cacheBlocks, currKeyLen, currMemstoreTS, currMemstoreTSLen, currValueLen, isCompaction, pread, reader |
Constructor Summary | |
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HFileReaderV2.EncodedScannerV2(HFileReaderV2 reader,
boolean cacheBlocks,
boolean pread,
boolean isCompaction,
boolean includesMemstoreTS)
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Method Summary | |
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protected ByteBuffer |
getFirstKeyInBlock(HFileBlock curBlock)
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ByteBuffer |
getKey()
Gets a buffer view to the current key. |
String |
getKeyString()
Convenience method to get a copy of the key as a string - interpreting the bytes as UTF8. |
KeyValue |
getKeyValue()
|
ByteBuffer |
getValue()
Gets a buffer view to the current value. |
String |
getValueString()
Convenience method to get a copy of the value as a string - interpreting the bytes as UTF8. |
protected int |
loadBlockAndSeekToKey(HFileBlock seekToBlock,
boolean rewind,
byte[] key,
int offset,
int length,
boolean seekBefore)
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boolean |
next()
Scans to the next entry in the file. |
boolean |
seekTo()
Positions this scanner at the start of the file. |
Methods inherited from class org.apache.hadoop.hbase.io.hfile.HFileReaderV2.AbstractScannerV2 |
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readNextDataBlock, reseekTo, seekBefore, seekTo, seekTo |
Methods inherited from class org.apache.hadoop.hbase.io.hfile.AbstractHFileReader.Scanner |
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assertSeeked, getReader, isSeeked, reseekTo, seekBefore, seekTo, toString |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public HFileReaderV2.EncodedScannerV2(HFileReaderV2 reader, boolean cacheBlocks, boolean pread, boolean isCompaction, boolean includesMemstoreTS)
Method Detail |
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public boolean seekTo() throws IOException
HFileScanner
IOException
public boolean next() throws IOException
HFileScanner
IOException
public ByteBuffer getKey()
HFileScanner
HFileScanner.seekTo(byte[])
before this method.
public ByteBuffer getValue()
HFileScanner
HFileScanner.seekTo(byte[])
before this method.
public KeyValue getKeyValue()
KeyValue
.public String getKeyString()
HFileScanner
HFileScanner.seekTo(byte[])
before this method.
public String getValueString()
HFileScanner
HFileScanner.seekTo(byte[])
before this method.
protected ByteBuffer getFirstKeyInBlock(HFileBlock curBlock)
getFirstKeyInBlock
in class HFileReaderV2.AbstractScannerV2
protected int loadBlockAndSeekToKey(HFileBlock seekToBlock, boolean rewind, byte[] key, int offset, int length, boolean seekBefore) throws IOException
loadBlockAndSeekToKey
in class HFileReaderV2.AbstractScannerV2
IOException
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